Final answer:
A speed governor is an electronic device that restricts the maximum speed of a vehicle by controlling the fuel supply to the engine. It continuously monitors the vehicle's speed to prevent it from exceeding the set limit.
Step-by-step explanation:
A speed governor is a device that restricts the maximum speed of a vehicle. It works by electronically controlling the amount of fuel supplied to the engine, thereby limiting the vehicle's speed. The speed governor continuously monitors the speed of the vehicle and adjusts the fuel supply to prevent the vehicle from exceeding the set speed limit. For example, if the maximum speed is set at 80 km/h, the speed governor will prevent the vehicle from going faster than 80 km/h.